Tile-coating machine.



F. E. GOLDSMITH.

TalLE COATING MACHINE.

APPLICATION FILED MAR. 30. i912.

1,238,128. Patented Aug. 28, 1917.

2 SHEETS SHEET I.

nvfivissEs i HVVENTOR C 4 F. E. GOLDSMITH.

TILE COATING MACHINE.

APPLICATION FILED MAR. 30. 1912.

Patenud Aug. 28, 1917.

2 SHEETS-SHEET Z.

rumrrnn s reams PATENT @Fmwo FREDERICK E. GOLDSMITH, OF I-IAMTLTON, OHIO, ASSIGNOR TO CERAMIC MACHINERY COMPANY, OF HAMILTON, OHIO, A CORPORATION OF OHIO.

TILE-COATING MACHINE.

Application filed March 30, 1912.

To (:ZZ whom. 525m 0?] concern.

Be it known that I, Fnnonnu'r; E. Gonn- SMITH, a citizen of the United States, rcsiding at Hamilton, County of Butler, and State of Ohio, have invented certain new and useful Improvements in TileCoating Machines, of which the following is a specification.

My invention relates to machinery for applying vitreous coating to tiles and similar objects. More particularly it relates to a machine for-applying a very heavy coating. Further. it relates to means for first applying a moist or adhesive coating to the tiles and then applying dry pulverized coating material to the moist or adhesive surface. Further, the invention provides means for primarily coating or dusting the tiles and then secondarily coating or dusting them, and handling them between the two dusting operations in a proper manner so that the first application will not be destroyed or damaged.

1 will now describe an exemplifying machine embodying my invention, as shown in the accompanying drawing, in which the various elements are shown for the sake of clcarness in a simple, diagrammatic form.

Figure 1 is an elevation of a representative embodiment of the invention.

Fig. '2 is a vertical longitudinal section of one of the moisteners and dusters with intermediate conveyor.

Fig. 3 is a transverse vertical section through one of the dusters, the word trans verse being used with reference to the machine as a whole.

Referring first to Fig. 1. reference character 3 designates a primary moistening device; B a primary coating or dusting device; a secondary moistening device, and l) a secondary dusting-device. a is a. feed belt for supplying tiles or similar objects to moistener A; 7) is a belt for handling the objects between moistener A and duster B; belt between duster B and moistener and (l is a belt between moistener C and duster D. Any suitable belt may also be provided to take away objects from the taste D in an obvious manner.

1 designates an air pump driven by any roilvllilsllt motor 2. The pump stores air pressure in taul; from which air is Specification of Letters Batent.

Patented Aug 28, 1917.

Serial No. 687,285.

supplied to atomizers in moisteners A and C by pipes i and suitable valves 5.

Tiles are carried by feed belt a to the moistener A, where their upper faces are coated with size or other suitable moist or adhesive substance; the tiles are then carried by belt 7) to duster B, where pulverized vitreous coating material is dusted upon the soft or adhesive surfaces of the tiles. The belt 6 may be of such length that suitable opportunity is given for partly drying the moistened surfaces of the tile in their passage from the moistener to the duster when that is necessary. Belt 0 then takes the tiles from duster B in cases where an additional coating must be placed upon the tiles; additional size is applied in moistener C; the tiles are carried forward bybelt d and additional coating is dusted upon them in duster D; the tiles are then removed in any convenient way for firing.

Fig. 2 is an enlarged longitudinal section through one of the moisteners A and duster B. The moistener consists of a housing or box 10 within which is an atomizer or sprayer 11. This comprises a trough 12 in which is swiveled a fluid nozzle 13. WVithin the fluid nozzle is fixed an air nozzle 14 carried on the end of pipe 15, Which is swiveled in the air pipe i at 16. This swiveling provides means by which the spray nozzle, consisting of the fluid nozzle 13 and air nozzle ll, may be rotated so that the atomizer )OlIllZS downward at the tiles or upward into the dome-shaped top of the b0X,as may be desired. The particular form of atomizer described is only representative and any suitable device for the purpose may be employed.

Below the box 10 is a combined reservoir and pump 20 consisting of a tub mounted on a rotor 21 suitably impelled. The bottom of box 10 is tapered oil as at 17,-t0 discharge into the tub. \Vithin the tub is a pipe 22 terminating at 23 at the bottom of the tub in a tangential portion, the opening of which is directed against the direction of motion of the tub. hen the tub is suitably. supplied with fiuid, such as size, and rotated atproper speed, the centrifugal effeet and momentum of the fluid forces it up to the tangential openin 23 and pipe 22, from which it is discharged at 24 into the \Vithin the box is a series of transverse roll-' ers 31 and there are one or more rollers 39.

outside the box adjacent to the openings .30.

. These rollers are all rotated in the feeding direction by suitable gearing, details of which are not important.

Above the openings 30 within the box, are drip-troughs 33, which prevent size from running down across the openings 30.

Tiles delivered by the feed belt a of Fig. 1, arepassed through box 10 by rollers Bl.

Size is sprayed directly upon the tiles by" the atomizer when it is directed downward as shown in Fig. 2, or else the entire interior of the box may be filled with mist of suitable density, and this is applied to the tiles in their passage without direct air blast. Superfluous size gathering upon the Walls of the box runs down and is returned to the tub for repumping. Passing from the moistener A, tiles are carried by the belt I) to the first duster B, which will now be described.

The front and back walls of the dust box B are provided with openings 40 for the passage of the tile, and within the box are rollers t1 similar to those already described with reference to the moistener. At one end of the box is a bin 42 with a hinged cover, in which the pulverized coating material is placed. This discharges through the opening 43 at the bottom of partition at and is taken up by blades or scrapers 45 carried by scraper belt to. This belt passes over drums or pulleys l7 at the ends of the box and is impelled by any suitable kind of driving connection. The partition .4. is curved so that material taken up by the blades is confined between the partition and the belt as the right-hand blades rise around their pulley. The belt is provided with perforations or with a central space throughout its length. As the belt passes away from the partition, the powder is prevented from falling by a shelf 48. Above the rollers is a screen 49. Another shelf 50 at the other side of the screen may be provided to protect the bearings of the rollers. The powder carried by the belt blades is sifted through screen a?) and deposited upon the tiles to which it adheres thickly because of the moisture or size previously applied. The screen equalizes the deposit of coating over the entire face of the come to moistener C have upon them a deposit of dust received in box B, and to avoid blowing away any of this dust, the atomizer in box C is usually directed upward, as shown, and moistener in box C is thus deposited by the indirect method without direct blast of air upon the tiles. Duster D may be substantially a duplicate of duster B.

This coatingapparatus is designed largely to apply a very heavy coating to the tiles and it is sometimes impossible to make this coating sufficiently heavy with a single treatment even by the sizing and dusting method. This is why a second moistener and duster are usually provided, as shown in Fig. 1. Also, to give the pulverized material sutlicient time to properly adhere to the tile after the first application. Belt 0 may be made of considerable length and in some cases a heater may be supplied so that the primary heavy coating of dust will properly set before the second application of moisture and dust is made. Belt 0 as shown in Fig. 1 is broken in the middle to indicate that it may be of any considerable length to allow of this setting of the primary coating.

A great many different forms of mechanism for carrying out this process have been devised, and the foregoing is only one BX emplification, and i do not limit myself in any respect to details.

Reference is made to applican'ts co-pending application, Serial No. 689,825, for a process of coating tiles and the like.

I claim:

In coating apparatus, the combination of a first moistening box, a first dusting box, a second moistening box, liquid spraying means therein, means for directing said spraying means upward to provide an atomized spray directed away from the tiles, upon which said spray falls without disturbing coating previously deposited, a second dusting box, and conveying means for passing tiles or the like through said boxes in the order named, said means being constructed and arranged to permit the coated. surface of the tiles to dry somewhat between the first dusting box and the second moistenbox.

FREDERICK E. GOLDSMITH. Yi itnesses JLYssns J. Bxwxrnn,

PAUL Aiunis. 

